i have been experiencing problems when playing videos on my computer. i don't know how to explain it, pixels appear in differnt colors and screen does not display properly also video flashes for about 10 seconds then plays ok. if i move the open window around the screen then the page refreshes and appears normal again

I have a similar problem! My display is actually a Hisense 39inch TV. I connect to the Tv using a DVI-HDMI cable.Mine is an intel HD 2000 integrated graphics. When I play video in WMP, it is all pixelated and dark regions in the video appears greenish! I have got the latest graphics drivers as well! I was thinking of buying an external graphics card but since you have got a graphics card already and if still this problem occurs, then it could be due to someother reason! What cable do u use to connect ur pc to ur display? I tried the same video in another PowerDVD 12 but no luck! Let us know if anyone happen to fix this problem!